Pipe coupling



FIG. 1 is a perspective view showing a pipe coupling in accordance witha first embodiment of my new design;

FIG. 2 is a front elevational view of the first embodiment;

FIG. 3 is a rear elevational view of the first embodiment;

FIG. 4 is a right side elevational view of the first embodiment;

FIG. 5 is a left side elevational view of the first embodiment;

FIG. 6 is a top plan view of the first embodiment;

FIG. 7 is a bottom plan view of the first embodiment;

FIG. 8 is a perspective view showing a pipe coupling in accordance witha second embodiment of my new design;

FIG. 9 is a front elevational view of the second embodiment;

FIG. 10 is a rear elevational view of the second embodiment;

FIG. 11 is a right side elevational view of the second embodiment;

FIG. 12 is a left side elevational view of the second embodiment;

FIG. 13 is a top plan view of the second embodiment; and,

FIG. 14 is a bottom plan view of the second embodiment.

The solid gray surface shading represents a contrast in appearance. Thebroken lines shown in the drawings depict portions of the pipe couplingthat form no part of the claim.

CLAIM The ornamental design for a pipe coupling, as shown and described.